Oevillb k wood and albeet g



2- Sheets-Sheet 1.

O. K. 8v A. G. H. WOOD.

Grain Separator.

No. 236,659. Patented Jan. 11,1881.

Q o 0 Q QR WITNESSES My L 7/ N-PETERS, PHOTO-LITHOGRAPHER, WASHINGTON. DC.

2 Sheets-Sheet 2.

0. K. & A G. H. WOOD.

Grain Separator.

Patented Jan. 11, 188i.

INVENT jig-J.

ORS

NZPETERS, EHOTO-UTHOGRAPH UNITED STATES PATENT OFFICE.

ORVILLE K. WOOD AND ALBERT G. H. WOOD, OF OHAZY, NEW YORK.

#GRAlN-SEPARATO R.

SPECIFICATION forming part of Letters Patent No. 236,659, dated January11, 1881.

Application filed September 20, 1879.

To all whom it may concern:

Be it known that we, ORVILLE K. WOOD and ALBERT G. H. WOOD, of the townof Ohazy, in the county of Clinton and State of NewYork, haveinventedcertain new and useful Improvements in Grain-Separators, which are morespecially adapted for that class of such machines known asgrain-separators and fanning-mills, and we do hereby declare that thefollowing is a full, clear, and exact description thereof, referencebeing had to the accompanying drawings, in which- Figure 1, Sheet 1, isa side elevation of our machine. Fig. 2, Sheet 1, is a longitudinalsection. Fig. 3, Sheet 2, is a transverse section, showing thearrangement of means for agitating the screens; and Fig. 4 is a detailperspective view of the rake.

Our improvements apply particularly to grain-separators or fanning-millsof the class to which those belong which were patented to Orville K.Wood, March 9, 1875, and numbered 160,561, and March 7, 1876, andnumbered 174,606.

Motion is imparted to the usual upper shoe and lower long screen-frameby means of the connection a from the fan-shaft to the arm (I on theupright rock-shaft A, having arms I) 6, arranged on opposite sides ofthe said shaft, and respectively connected to said upper and lowershoes, for giving counterbalancin g movements in opposite directions.These devices are plainly shown in Figs. 1, 2.

The upper shoe is provided with a rake, B,

5 journaled in the sides of the shoe, below the plane of the feed-board, and provided, as shown, with an arm, f, projecting from the backof the bar carrying the teeth into a diagonal slot, 9, in a metallicplate secured to the forward edge of the stationary wind-board O. Thisboard is located beneath the feed-board of the shoe, and the transversemotion of the shoe causes arm f to traverse the inclined slot 9 andproduce a vertical vibration of fingers B.

This mechanism is located out of the Way of any straws, chaff, &c., andcannot become clogged. Its peculiar merit is, that the old constructionof the fanning-mill is utilized, without material alteration, for thepurpose of giving this motion to the rake.

The lower screen-frame, Figs. 2 and 3, is provided with bars E at eachend, formed with alternate smooth and roughened under faces, which areconstructed as metallic plates. These bars rest upon thesupporting-rollers 7e, journaled in beam D, made shorter than the widthof the machine, and adjustableupon a transverse slotted bar, 1, by meansof setscrew 5, so as to bring the rollers under the smooth portions ofplate E or under the corrugated portions at will, and change the motionof the screen-frame from a smooth to a tremulous one, or "ice versa, atwill, according to the kind and condition of the grain to be treated.

We claim as our invention 1. The combination, with the rake B, journaledin the reciprocating shoe, below the feedboard, and provided with arm f,of the windboard 0 beneath said feed-board, and provided with the plateg, formed with an inclined slot, substantially as set forth.

2. The combination, with a shoe or sieveframe and a supporting-bar, of aplate formed with a face alternately smooth and corrugated at intervals,and a roll or rolls having a smooth perimeter and supporting said shoeor sieveframe from said bar, said shoe or frame and said bar being madeone adjustable relatively to the other, for the purpose of changing froma smooth to a tremulous movement, and vice versa,substantially as setforth.

ORVILLE K. WOOD. ALBERT G. H. WOOD.

Witnesses:

J NO. CHAMBERLAIN, A. F. BRANDO.

